But, as it would turn out, the grey coloring was difficult for Marvel's printers to produce, so Lee was forced to shift the Hulks appearance from grey to green in The Incredible Hulk #2.

The Incredible Hulk is one of the most iconic superheroes ... encountered issues with the grey coloring, leading to various shades of grey and even green in the issue. Ultimately, Lee opted ...

Perhaps best known from the Marvel Cinematic Universe, the Incredible Hulk was created during the 1960s. Initially a comic book character, the Hulk has since been a part of television series ...